No Sim Card? Let me tell you how to activate your old iphone to use it as a ipod touch.

 In a nutshell to bypass the activation you will need to jail break phone.

First download tiny umbrella

plug in you iPhone then start tiny umbrella

take note of the software version

Next download red snow make sure you get the right version for your phone and firmware

download the proper firmware for your phone (google this)

Run red snow and follow the directions

That's it your done.. not to hard